package com.project.transactionspringboot.configuration;

import java.util.Map;

import javax.persistence.EntityManager;
import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
		entityManagerFactoryRef = "entityManagerFactorySecondary",
		transactionManagerRef = "transactionManagerSecondary",
		basePackages = { "com.project.transactionspringboot.repository.secondary" }
)
public class SecondaryConfiguration {

	@Autowired
	private JpaProperties jpaProperties;
	
	@Autowired
	@Qualifier("secondaryDataSource")
	private DataSource secondaryDataSource;
	
	@Bean(name = "entityManagerSecondary")
	public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
		return entityManagerFactorySecondary(builder).getObject().createEntityManager();
	}
	
	@Bean(name = "entityManagerFactorySecondary")
	public LocalContainerEntityManagerFactoryBean entityManagerFactorySecondary(EntityManagerFactoryBuilder builder) {
		return builder
				.dataSource(secondaryDataSource)
				.properties(getVendorProperties())
				.packages("com.project.transactionspringboot.domain")
				.persistenceUnit("secondaryPersistenceUnit")
				.build();
	}
	
	private Map<String, Object> getVendorProperties() {
		return jpaProperties.getHibernateProperties(new HibernateSettings());
	}
	
	@Bean(name = "transactionManagerSecondary")
	PlatformTransactionManager transactionManagerSecondary(EntityManagerFactoryBuilder builder) {
		return new JpaTransactionManager(entityManagerFactorySecondary(builder).getObject());
	}
}
